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Cheap flights from Montreal to London Heathrow Airport from C$ 433

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LHR
29 Mar — 5 Apr1
1 adult

Cheapflights Tip: The best prices from Montreal to London Heathrow are usually found in September or October, booked 39 days in advance, depart on a Friday or Sunday and return on a Saturday

Cheap flight deals from Montreal to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 24 March 2025.

Round-trip from

C$ 809

One-way from

C$ 433

Popular in

December

Cheapest in

September

Average price

C$ 1,013

Good round-trip deal

C$ 1,026 or less

Good one-way deal

C$ 1,024 or less
Air Canada
  • Air Canada
  • 13/5-7/6
  • 1 total stop
  • 16h 15m total
  • Montreal to London
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4/6
  • 4/6
  • 1 total stop
  • 10h 15m total
  • Montreal to London
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Highest demand for flights based on searches. 2% potential increase in price (C$ 33 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 29 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Montreal (YMQ) to London Heathrow.
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Price to beat on a one-way flight from Montreal (YMQ) to London Heathrow.
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Find flight deals from Montreal to Heathrow

Cheapest flights from Montreal to Heathrow
Explore the most affordable flight options available from Montreal to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 March 2025.

Tue 13/510:25 p.m.YUL - LHR
Nonstop6h 35mAir Canada
Sat 7/66:50 a.m.LHR - YUL
1 stop9h 40mAir Canada
Deal found 22/3C$ 809
Sun 11/510:00 p.m.YUL - LHR
Nonstop6h 40mBritish Airways
Fri 16/56:05 p.m.LHR - YUL
Nonstop7h 10mBritish Airways
Deal found 24/3C$ 816
Wed 7/510:25 p.m.YUL - LHR
Nonstop6h 35mMultiple Airlines
Tue 27/58:45 a.m.LHR - YUL
1 stop11h 15mMultiple Airlines
Deal found 24/3C$ 822
Mon 9/69:55 p.m.YUL - LHR
1 stop18h 05mLufthansa
Sat 14/67:25 a.m.LHR - YUL
1 stop18h 35mLufthansa
Deal found 24/3C$ 828
Thu 5/610:05 p.m.YUL - LHR
Nonstop6h 40mAmerican Airlines
Sun 29/66:05 p.m.LHR - YUL
Nonstop7h 10mAmerican Airlines
Deal found 24/3C$ 848
Tue 6/54:30 p.m.YUL - LHR
2 stops20h 20mSWISS
Mon 12/56:40 p.m.LHR - YUL
2 stops30h 56mSWISS
Deal found 23/3C$ 867
Thu 22/56:55 p.m.YUL - LHR
1 stop17h 10mBrussels Airlines
Mon 16/65:50 p.m.LHR - YUL
2 stops29h 01mBrussels Airlines
Deal found 24/3C$ 898
Sun 18/58:30 a.m.YUL - LHR
2 stops17h 15mUnited Airlines
Mon 2/67:25 a.m.LHR - YUL
2 stops19h 22mUnited Airlines
Deal found 23/3C$ 903
Thu 18/910:45 p.m.YUL - LHR
1 stop18h 20mTAP AIR PORTUGAL
Thu 16/106:00 a.m.LHR - YUL
1 stop20h 10mTAP AIR PORTUGAL
Deal found 23/3C$ 960
Mon 31/36:35 p.m.YUL - LHR
1 stop22h 05mAustrian Airlines
Sun 20/412:40 p.m.LHR - YUL
1 stop11h 02mAustrian Airlines
Deal found 23/3C$ 1,029
Thu 18/910:05 p.m.YUL - LHR
Nonstop6h 40mFinnair
Thu 16/106:05 p.m.LHR - YUL
Nonstop7h 10mFinnair
Deal found 23/3C$ 1,033

Cheapflights Fare Finder

Customize your flight search to find flights from Montreal to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 24 March 2025.
Use the filters below to find and compare flights from Montreal to London Heathrow Airport that are best for you.

Fly from

Montreal

Fly to

Heathrow

Route

Depart

Return

Price

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 3/5

3:30 p.m.-6:35 a.m.

1 stop10h 05m

London Heathrow

Fri 9/5

8:40 a.m.-3:00 p.m.

1 stop11h 20m

C$ 809

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 21/5

10:25 p.m.-10:00 a.m.

Nonstop6h 35m

London Heathrow

Tue 17/6

8:45 a.m.-3:00 p.m.

1 stop11h 15m

C$ 815

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sun 11/5

10:00 p.m.-9:40 a.m.

Nonstop6h 40m

London Heathrow

Fri 16/5

6:05 p.m.-8:15 p.m.

Nonstop7h 10m

C$ 816

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 9/6

9:55 p.m.-9:00 p.m.

1 stop18h 05m

London Heathrow

Sat 14/6

7:25 a.m.-9:00 p.m.

1 stop18h 35m

C$ 828

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 5/6

10:05 p.m.-9:45 a.m.

Nonstop6h 40m

London Heathrow

Tue 1/7

6:05 p.m.-8:15 p.m.

Nonstop7h 10m

C$ 848

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 6/5

4:30 p.m.-5:50 p.m.

2 stops20h 20m

London Heathrow

Mon 12/5

6:40 p.m.-8:36 p.m.

2 stops30h 56m

C$ 867

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 22/4

5:00 p.m.-4:35 p.m.

1 stop18h 35m

London Heathrow

Tue 13/5

11:45 a.m.-4:55 p.m.

1 stop10h 10m

C$ 898

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sun 18/5

8:30 a.m.-6:45 a.m.

2 stops17h 15m

London Heathrow

Mon 2/6

7:25 a.m.-9:47 p.m.

2 stops19h 22m

C$ 903

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 7/6

4:00 p.m.-9:30 a.m.

2 stops12h 30m

London Heathrow

Mon 30/6

12:45 p.m.-10:44 p.m.

2 stops14h 59m

C$ 946

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 18/9

10:45 p.m.-10:05 p.m.

1 stop18h 20m

London Heathrow

Thu 16/10

6:00 a.m.-9:10 p.m.

1 stop20h 10m

C$ 960

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/3

Showing 1-10 of 21 results
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Best time to book a flight from Montreal to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Montreal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montreal to London Heathrow Airport

How far ahead should I book a flight from Montreal to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to Heathrow. Price data was last updated on 21 March 2025.

The price you pay for your flight from Montreal to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Montreal to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Montreal to London Heathrow Airport (average of C$ 560). Flying from Montreal to London Heathrow Airport in July is currently the most expensive (average of C$ 874). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YMQ to LHR?

Find hourly flight availability from Montreal to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 March 2025.

When flying from Montreal to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 35% versus a flight in the evening.

What is the cheapest day to fly from Montreal to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Montreal to Heathrow. Price data was last updated on 15 September 2024.

Travelers seeking maximum savings on their Montreal to London Heathrow Airport flight should consider departing on Sunday mornings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Montreal to London Heathrow Airport

Explore weekly flight availability from Montreal to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 24 March 2025.

The most flights from YMQ to LHR are scheduled on a Friday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 24 March 2025.
Peruse reviews from past customers who have flown with Delta, Azores Airlines and Finnair from Montreal to London to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,888 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,888 reviews
Delta
8.0
Very good
7,888 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Azores Airlines
7.6
Good
63 reviews
Delta
8.0
Very good
7,888 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,266 reviews
Delta
8.0
Very good
7,888 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.5
Good
769 reviews
Delta
8.0
Very good
7,888 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,569 reviews
Delta
8.0
Very good
7,888 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Montreal to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Montreal to London Heathrow Airport round-trip?

    Currently priced at C$ 809, Air Canada will fly you from Montreal to London Heathrow Airport and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and Lufthansa - these airlines can fly you to your destination from C$ 816 and C$ 828, respectively. Air Canada is 23% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Montreal to London Heathrow Airport one-way?

    The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as C$ 479. However, be on the lookout for offers from Azores Airlines and Air Canada, as they are both options that can get you from Montreal to London Heathrow Airport for a low price.

  • What are the most reliable airlines from Montreal to London Heathrow Airport?

    The top 3 most reliable airlines when flying from Montreal to London Heathrow Airport are Aegean Airlines (64%), American Airlines (62%) and Aer Lingus (62%).

  • What are the cheapest flights from Montreal to London Heathrow Airport?

    Looking for the cheapest flight from Montreal to London Heathrow Airport? While on average our users pay C$ 2,717, our data indicates the cheapest price to be C$ 843. The most popular route (Montreal Pierre Elliott Trudeau Intl - London Heathrow), is priced around C$ 644.

  • Can I find deals for flights from Montreal to Heathrow that include hotel bookings?

    Yes. In addition to deals on Montreal to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montreal to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Heathrow.

  • Can I find deals for business class flights from Montreal to Heathrow?

    Yes. Cheapflights offers flight deals from Montreal to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montreal to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Montreal to London Heathrow Airport (average of C$ 560). Flying from Montreal to London Heathrow Airport in July is currently the most expensive (average of C$ 874). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Montreal?

Book flights to Montreal if you plan to visit one of these locations
Brentford
Hounslow
Sutton
Slough
Milton Keynes
Romford
Watford
Luton
Bromley
Bedford
Southall

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Fly from Montreal to Heathrow on these airlines

Choose from the following airlines for your flight from Montreal to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 24 March 2025.
Air Canada flights from Montreal to London Heathrow
British Airways flights from Montreal to London Heathrow
Lufthansa flights from Montreal to London Heathrow

Top 9 airlines flying from Montreal to Heathrow

Discover the top 9 airlines that operate flights from Montreal to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 24 March 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapestC$ 590AverageC$ 1,046FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air FranceCheapestC$ 633AverageC$ 932FlexibilityNo cancel feeOn-time77%
Search Air France flights
TAP AIR PORTUGALCheapestC$ 643AverageC$ 707FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air TransatCheapestC$ 763AverageC$ 1,041FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Virgin AtlanticCheapestC$ 798AverageC$ 894FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air CanadaCheapestC$ 811AverageC$ 1,056FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapestC$ 839AverageC$ 1,066FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapestC$ 842AverageC$ 1,116FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapestC$ 1,010AverageC$ 1,191FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Montreal to Heathrow?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Montreal to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Montreal to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Montreal.

Can Cheapflights find flights from Montreal to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Montreal? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Montreal to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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